'use strict';
var map_to_three_multiples = function(collections){
  let arr=[];
  for(let item of collections){
    let a=item*3;
    arr.push(a);
  }
  console.log(arr);
  return arr;
  // return [3,9,15,12,27];
};

module.exports = map_to_three_multiples;
